Genesis 25:19-24

19This is the genealogy of Isaac, Abraham’s son. Abraham begot Isaac.

20Isaac was forty years old when he took Rebekah as wife, the daughter of Bethuel the Syrian of Padan Aram, the sister of Laban the Syrian.

21Now Isaac pleaded with the Lord for his wife, because she was barren; and the Lord granted his plea, and Rebekah his wife conceived.

22But the children struggled together within her; and she said, “If all is well, why am I like this?” So she went to inquire of the Lord.

23And the Lord said to her: “Two nations are in your womb, Two peoples shall be separated from your body; One people shall be stronger than the other, And the older shall serve the younger.”

24So when her days were fulfilled for her to give birth, indeed there were twins in her womb.